EP0856134B1 - Verfahren und vorrichtung zum erzeugen von kälte - Google Patents
Verfahren und vorrichtung zum erzeugen von kälte Download PDFInfo
- Publication number
- EP0856134B1 EP0856134B1 EP96934836A EP96934836A EP0856134B1 EP 0856134 B1 EP0856134 B1 EP 0856134B1 EP 96934836 A EP96934836 A EP 96934836A EP 96934836 A EP96934836 A EP 96934836A EP 0856134 B1 EP0856134 B1 EP 0856134B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- condenser
- absorption
- district heating
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims description 52
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 238000010438 heat treatment Methods 0.000 claims description 47
- 238000010521 absorption reaction Methods 0.000 claims description 38
- 230000005494 condensation Effects 0.000 claims description 23
- 238000009833 condensation Methods 0.000 claims description 23
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 12
- 238000009826 distribution Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 231100000206 health hazard Toxicity 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000589248 Legionella Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229940059936 lithium bromide Drugs 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/026—Absorption - desorption cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Definitions
- the invention relates to a method for the production of cooling power, in which cooling power is produced by an absorption aggregate that obtains energy from a district heating system and is distributed to buildings by means of liquid circulating in a pipe system.
- the invention also relates to an arrangement for the production of cooling power.
- Cooling power could also be produced by waste heat produced in the production of electricity in so-called absorption aggregates, the best known of which are lithiumbromide/water and ammonia/water aggregates.
- absorption aggregates the best known of which are lithiumbromide/water and ammonia/water aggregates.
- the consumption of electricity and thus e.g. emissions of CO 2 could be reduced with these aggregates, and the waste heat, which is now completely wasted, could be utilized.
- US-A-4 134 273 describes a typical absorption aggregate intended to be used for heating and cooling of a house
- the preferred way of generating chill is a so-called district cooling system, in which cooling power is generated concentratedly in power plants and supplied to users via a pipe system in the same way as district heat. This has an advantageous effect e.g. on servicing costs, which in the present, dispersed systems are high, and on reliability, on levelling down of random load peaks, etc.
- District cooling systems have not become common, however, due to high investment costs. Although the kWh price of the chill generated in this way is low as compared with the price of electricity, the number of hours of use is so small in those climatic zones where district heating systems are worth building that the investment costs will not be covered. In Finland, for example, such systems have thus not been built. The majority of them exist in Japan, Korea and the U.S.A.
- Finnish Patent Application 940,342 (WO-A-9 520 134, EP 0 740 761) teaches a 3-pipe system by which the costs of the distribution system can be reduced significantly.
- Finnish Patent Application 940,343 (WO-A-9 520 135, EP 0 772 751) teaches a system in which the operations of the heat exchangers are combined, which makes it possible to significantly reduce the investment costs in individual buildings.
- Finnish Patent Application 940,344 WO-A-9 520 133, EP 0 740 760 teaches a system in which the return water of the district heating/cooling system is used as condensation water, which is needed by the absorption aggregate, whereby no cooling tower or other condenser is needed in the power plant. This reduces the investment costs and the costs of use in the production of district chill.
- a similar problem has been encountered when district heating systems have been built.
- the problem has been solved by movable heating stations in which heat has been produced only for a limited area, whereby the costs of a distribution system have remained small and can have been covered immediately.
- a main network is built, and the areas are connected to the power plant via the network.
- the movable heating stations are shifted to new areas or maintained in the area as heating stations that are used during maximum heat demand.
- the idea cannot be applied to building a district cooling system without difficulty. It is true that the costs of building a main network are eliminated, but the use of return water as condensation water is here not possible. Because of this, cooling towers, ground water, etc. should be used. But, for example, it is often impossible to place cooling towers in urban areas for architectural reasons, lack of space, etc.
- the evaporative cooling and especially the tank naturally cause additional costs, which, however, are much smaller than the savings achieved by making the absorption heat pump, spray tower, pipe system, etc. smaller. They do, however, impair the competitiveness of the system as compared with compressor cooling.
- the investments on the production and distribution of heat are determined by peak consumption, which is primarily dependent on the outdoor temperature.
- the design outdoor temperature prevails relatively seldom.
- the design temperature of Helsinki, for example, is -26°C. This temperature, however, prevails on the average during fewer than 18 hours per year.
- a temperature of or below 20°C prevails on the average during about 88 hours, whereas the entire heating period is about 5000 to 6500 hours in length, depending on the building. The situation is thus very similar to the summer.
- the temperature duration curve comprises a high peak value of short duration.
- a heat power plant and a distribution system should be designed in accordance with peak consumption, but their average degree of use would then be about 25% to 35%. In addition, the situation is growing worse and worse.
- the power plant and distribution system which are expensive to build, are not designed in view of the peak load but of a much smaller output.
- the peak output of heat consumption is generated in heating stations used during maximum heating demand, the heating stations being arranged in different parts of the distribution system and their proportion of the overall heating power optionally being large.
- the degree of use of the maximum heating stations is low, at best only a few dozen hours a year.
- the unit price of heat generated in them is very high because of the high investment costs.
- the daily variation in heat consumption can be levelled such that the buildings connected to the system do not take any heat from the district heating network and in some cases may even be able to supply power to the district heating network when consumption in the other buildings is maximal. Correspondingly, they draw power from the network when consumption in the other buildings is small.
- the basis of the system is that a tank for storing cooling power is used even for the storage of heating power at a temperature that is higher than the temperature of the heat consuming apparatuses of the building. The system makes it possible to level peak loads caused by the other buildings and to make uneconomic maximum heating stations smaller or even replace them.
- district heat return water obtained from present networks cannot be used in removal of extra heat from an absorption aggregate.
- a conventional temperature for return water in a design situation is about 40-50°C.
- the temperature of the water to be condensed, as it returns from the absorber, is about 40-45°C, and it should be cooled to below 30°C, which is naturally impossible to accomplish with district heat return water.
- cooling towers closed air-cooled condensers, brine condensers or the like, which cause extra costs, consume electricity, bring about servicing costs, etc.
- a particular problem is the space they need, since extra space is very difficult to find in old buildings in a city centre.
- the other problems include e.g. architectural problems and health hazards, the latter relating to cooling towers and air-cooled condensers where the temperature is ideal e.g. to the bacterium legionella .
- the problem especially with absorption aggregates is the high temperature of the return water.
- Modern absorption aggregates can cool water from about 80°C to at most 70°C. Since the flow rate in many parts of a district heating system is minimal in the summer, the return water of the absorption aggregate cannot usually be returned to a supply pipe but it should be returned to a return pipe. When the flow rate even there is low, there is a risk that the temperature in the return pipe may rise to nearly 70°C. This is probably too high to many return pipes in which the compensation for heat expansion has been designed in view of a temperature of 50°C. The estimated maximum temperature is 60°C. The return water of the district heating system should then be cooled by 10-15°C. For this, similar condensers are needed as described above in connection with the absorption aggregate and even the drawbacks caused by them are the same, i.e. costs, consumption of power, servicing, lack of space, health hazards, etc.
- the object of the invention is to provide a system by which the drawbacks of the prior art can be eliminated.
- the basic idea of the invention is that the temperature of the condensation water returning from the absorption aggregate is about 45°C, so the return water of the district heating system can be cooled with it preferably to 60-55°C. Since the heat supplied to the boiler and to the evaporator of the absorption aggregate are both absorbed into the condensation water, the flow of water is certainly sufficient to cool the return water of the district heating system. The water is heated by 5-9°C, i.e. to 50-55°C, depending on the power factor and temperature design of the absorption aggregate. This kind of rise in temperature does not raise the costs much, no matter how the condensation water is cooled.
- the method of the invention is characterized in that at least part of the condensation water coming from the absorption part of the absorption aggregate is arranged to cool return water of the district heating system before the condensation water is conducted to a condenser or tank.
- the arrangement according to the invention is characterized in that at least part of the condensation water coming from the absorption part of the absorption aggregate is arranged to be conducted to a heat exchanger arranged in the return pipe of the district heating system before it is conducted to a condenser or tank, whereby the condensation water cools the district heating return water.
- the primary advantage of the invention is that either no condensers are needed in the system for the district heating return water, or their size and/or number can be significantly reduced as compared with the previously known solutions.
- the above drawbacks of the prior art are either eliminated altogether or at least they become essentially easier to solve. It is especially important that the costs of the absorption aggregate are significantly reduced, which makes cooling energy generated by waste heat more competitive as compared with compressor cooling.
- Fig. 1 shows a district heating network 1-4, an absorption aggregate 5-16, a heat transfer circuit 18-25 of an air-conditioning unit, which represents cooling energy demanding apparatuses of a building, and a system of chill distributing pipes 32 and 33.
- the arrangement of fig. 1 operates, in principle, as described in the following. That part of the return water coming from an absorption part 10 of the absorption aggregate through pipe 13 which is needed for cooling the return water of the district heating system is conducted by a valve 50 to a heat exchanger 51 arranged in a return pipe 4, where it cools return water of the district heating system. From heat exchanger 51, the water is recirculated to pipe 13, further to a condenser 14 and through a pipe 15 to a condenser 8 of the absorption aggregate.
- Condenser 14 has to be designed in view of a 5-9°C higher supply water temperature than without a cooling circuit 50-51 of the district heating return water. The costs caused by this, however, are only a fraction of what they would be if an entirely separate cooling circuit with condensers, pipe systems, etc. were built for the district heating return water.
- the temperature of the district heating return water coming to heat exchanger 51 can be essentially reduced and the heat contained in it can be utilized by an embodiment according to fig. 3.
- a pre-heating means 54 for hot tap water of a building/buildings is arranged in return pipe 4 before heat exchanger 51.
- the consumption of tap water is so great that heat exchanger 51 is needed for stand-by use only.
- the embodiment is particularly advantageous since most buildings comprise an exchanger circuit 53-55 for heating, arranged in return pipe 4 of the district heating system. The actual function of the circuit is to lower the temperature of the return water during the heating. Since the consumption of tap water varies greatly in many building types, a heat exchanger 54 should preferably have storage capacity.
- the invention can be applied in all systems disclosed in simultaneously filed Finnish Patent Applications 954,949 (WO-A-9 714 917, EP 0 856 131), 954,950 (WO-A-9 714 918, EP 0 856 132) and 954,951 (WO-A-9 714 917, EP 0 856 133), no matter how the condensation water is cooled.
- An example is an embodiment of fig. 4, in which the hot water generated during the day is conducted through pipe 13 to the tank 26 and cooled at night by means of heat transfer circuits 18-25 and 35-41 of the air-conditioning units to a temperature of about 20°C, whereby the water can be cooled further in the absorption aggregate 6-16 or used as condensation water in the absorption aggregate.
- the operation is described in detail in Finnish Patent Application 954,951, so it will not be discussed here.
- an absorption aggregate will have to be used periodically e.g. in the spring or autumn when the cooling load of a building is light.
- the problem is solved by using the aggregate only at night and storing cold water in a tank 26.
- the absorption aggregate stands idle and cooling is effected by water stored in the tank.
- Air-conditioning units 18-25 and 35-41 need then not be used, either, since the water stored has a temperature of 20°C.
- auxiliary tank for the 20°C return water of the cooling systems of the building produced between operating periods and/or for the 50 to 55°C water produced during an operating period, or for both. They are connected with pipe and control arrangements known per se, and the arrangements can be varied in many ways depending on the selected strategy of use. All the above solutions known per se are encompassed by the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
- Central Heating Systems (AREA)
- Building Environments (AREA)
- Sorption Type Refrigeration Machines (AREA)
Claims (10)
- Verfahren zum Erzeugen von Kühlleistung, bei dem die Kühlleistung durch ein Absorptionsaggregat (5, 8, 9, 10) erzeugt wird, das Energie von einem Fernheizungssystem bezieht, und mittels einer in einem Rohrleitungssystem zirkulierenden Flüssigkeit an Gebäude verteilt wird, dadurch gekennzeichnet, dass mindestens ein Teil des Kondenswassers aus dem Absorptionsteil (10) des Absorptionsaggregats den Wasserrücklauf (4) des Fernheizungssystems abkühlt (51), bevor das Wasser in einen Kondensator (14) oder Behälter (26) geleitet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass nach dem Kondensator (14) ein Teil des Kondenswassers zurück zum Kondensator (14) geleitet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Temperatur Wasserrücklaufs des Fernheizungssystems verringert (54) wird, bevor die Temperatur durch das Kondenswasser verringert (51) wird.
- Verfahren nach einem der vorstehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, dass nach dem Kondensator (14) mindestens ein Teil des Kondenswassers zu einem Behälter (26) geleitet wird, der mit dem Absorptionsaggregat (5, 8, 9, 10) verbunden ist.
- Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die von den Gebäuden benötigte Leistung während des Tags aus dem Behälter (26) entnommen wird, in dem des Nachts kaltes Wasser gespeichert wird.
- Anordnung zum Erzeugen von Kühlleistung, bei dem die Kühlleistung durch ein Absorptionsaggregat (5, 8, 9, 10) erzeugt wird, das Energie von einem Fernheizungssystem bezieht, und mittels einer in einem Rohrleitungssystem zirkulierenden Flüssigkeit an Gebäude verteilt wird, dadurch gekennzeichnet, dass mindestens ein Teil des Kondenswassers aus dem Absorptionsteil (10) des Absorptionsaggregats zu einem im Wasserrücklaufrohr (4) des Fernheizungssystems angeordneten Wärmetauscher (51) geleitet wird, bevor es zu einem Kondensator (14) oder Behälter (26) geleitet wird, wodurch das Kondenswasser den Wasserrücklauf des Fernheizungssystems abkühlt.
- Anordnung nach Anspruch 6, dadurch gekennzeichnet, dass ein Teil des Kondenswassers nach dem Kondensator (14) durch eine Ventileinrichtung (52) an den Kondensator (14) zurückgeführt wird.
- Anordnung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Temperatur des Wasserrücklaufs des Fernheizungssystems vor dem Wärmetauscher (51) mittels eines anderen Wärmetauschers (54), der zur Erzeugung von warmem Leitungswasser für das Gebilde konzipiert ist, gesenkt wird.
- Anordnung nach einem der vorstehenden Ansprüche 6 bis 8, dadurch gekennzeichnet, dass nach dem Kondensator (14) mindestens ein Teil des Kondenswassers zu einem Behälter (26) geleitet wird, der mit dem Absorptionsaggregat (5, 8, 9, 10) verbunden ist.
- Anordnung nach einem der vorstehenden Ansprüche 6 bis 9, dadurch gekennzeichnet, dass kaltes Kondenswasser des Nachts im Behälter (26) gespeichert wird, und dass der Behälter (26) am Tag gespeichertes Wasser liefert, um die Gebäude mit Leistung zu versorgen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI954952 | 1995-10-17 | ||
FI954952A FI100431B (fi) | 1995-10-17 | 1995-10-17 | Menetelmä ja sovitelma jäähdytystehon tuottamisen yhteydessä |
PCT/FI1996/000547 WO1997014920A1 (en) | 1995-10-17 | 1996-10-16 | A method and arrangement for the production of cooling power |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0856134A1 EP0856134A1 (de) | 1998-08-05 |
EP0856134B1 true EP0856134B1 (de) | 2002-01-23 |
Family
ID=8544214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96934836A Expired - Lifetime EP0856134B1 (de) | 1995-10-17 | 1996-10-16 | Verfahren und vorrichtung zum erzeugen von kälte |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0856134B1 (de) |
AU (1) | AU7299596A (de) |
CZ (1) | CZ116298A3 (de) |
DE (1) | DE69618805T2 (de) |
DK (1) | DK0856134T3 (de) |
ES (1) | ES2169817T3 (de) |
FI (1) | FI100431B (de) |
PL (1) | PL181752B1 (de) |
WO (1) | WO1997014920A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI102565B (fi) * | 1997-08-12 | 1998-12-31 | Abb Power Oy | Menetelmä jäähdytystehon tuottamiseksi |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134273A (en) * | 1977-04-22 | 1979-01-16 | Brautigam Robert F | Home heating and cooling system |
DE3008948C2 (de) * | 1980-03-08 | 1985-03-14 | Saarberg-Fernwärme GmbH, 6600 Saarbrücken | Fernwärmenetz zur Versorgung von Wärmeverbrauchern mit Wärme mit zumindest einer Sorptionswärmepumpe |
DE3103955A1 (de) * | 1981-02-05 | 1982-08-12 | Battelle-Institut E.V., 6000 Frankfurt | "verfahren zur nutzung diskontinuierlicher energiequellen mit schwankenden temperaturen fuer fernheizungssysteme" |
FI98858C (fi) * | 1994-01-24 | 1997-08-25 | Abb Installaatiot Oy | Menetelmä termisen energian jakelujärjestelmän yhteydessä ja termisen energian jakelujärjestelmä |
-
1995
- 1995-10-17 FI FI954952A patent/FI100431B/fi not_active IP Right Cessation
-
1996
- 1996-10-16 WO PCT/FI1996/000547 patent/WO1997014920A1/en not_active Application Discontinuation
- 1996-10-16 DE DE69618805T patent/DE69618805T2/de not_active Expired - Fee Related
- 1996-10-16 CZ CZ981162A patent/CZ116298A3/cs unknown
- 1996-10-16 ES ES96934836T patent/ES2169817T3/es not_active Expired - Lifetime
- 1996-10-16 AU AU72995/96A patent/AU7299596A/en not_active Abandoned
- 1996-10-16 PL PL96326316A patent/PL181752B1/pl unknown
- 1996-10-16 EP EP96934836A patent/EP0856134B1/de not_active Expired - Lifetime
- 1996-10-16 DK DK96934836T patent/DK0856134T3/da active
Also Published As
Publication number | Publication date |
---|---|
PL181752B1 (pl) | 2001-09-28 |
DE69618805D1 (de) | 2002-03-14 |
FI954952A0 (fi) | 1995-10-17 |
CZ116298A3 (cs) | 1998-09-16 |
ES2169817T3 (es) | 2002-07-16 |
DE69618805T2 (de) | 2002-08-22 |
FI954952A (fi) | 1997-04-18 |
DK0856134T3 (da) | 2002-04-29 |
EP0856134A1 (de) | 1998-08-05 |
FI100431B (fi) | 1997-11-28 |
WO1997014920A1 (en) | 1997-04-24 |
AU7299596A (en) | 1997-05-07 |
PL326316A1 (en) | 1998-09-14 |
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